Development of GIS based realtime evaluation method of hazard for wide-area slope collapse during heavy rain

2014 Fiscal Year Final Research Report

• Project/Area Number: 25560178
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Natural disaster / Disaster prevention science
• Research Institution: Nagaoka University of Technology
• Principal Investigator: SATORU Ohtsuka 長岡技術科学大学, 工学(系)研究科(研究院), 教授 (40194203)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 斜面災害 / 豪雨 / 危険度評価 / 地理情報システム

Outline of Final Research Achievements

In this research, a real-time risk evaluation system of surface slope failure during heavy rain was developed by using the GIS software. First, the shear strength property of soil at slope surface was investigated by reverse analysis of wide-area slope disaster by treating the disaster in 2004 Chuetsu earthquake as a full scale model test. Then, by collecting slope failure datas of 2004 and 2011 Fukushima- Niigata heavy rainfall disasters, statistical analyses of two slope disasters were carried out. Based on these results, the real-time risk evaluation model of slope failure was developed by using rainfall record in time.

Free Research Field

防災工学